JP2012106685A5 - - Google Patents

Description

A collision energy absorber for a railway vehicle according to the present invention is a collision energy absorber that is provided at a front portion of a vehicle body of a railway vehicle and absorbs collision energy by being crushed by a load from the front, and mainly extends in the front-rear direction. absorption unit, and the main absorbent portion upper sub absorbing portion provided on the upper side of, and a lower sub absorbing portion provided on the lower side of the main absorbent portion, the upper sub absorbing portion, the front-rear direction provided upper breakable portion integral with the main absorbent portion through which extends the lower sub absorbing portion is provided integrally with the main absorbent portion via the lower breakable portion extending in the front-rear direction .

In the present embodiment, the fracture energy portions 10 and 40 are formed in the collision energy absorber 10 by providing a plurality of holes (unconnected portions B in FIG. 2) spaced apart from each other in the front-rear direction as perforations. However, you may form a planned fracture | rupture part by providing the several connection part between the main absorption part and a subabsorption part at intervals in the front-back direction, without providing a hole. Moreover, you may implement | achieve by making a fracture | rupture planned part thinner than other adjacent parts. In the present embodiment, the front end portions of the sub-absorbing portions 12 and 13 are separated from the main absorbing portion 11, but the sub-absorbing portions are joined to each other while the front end portions are in contact with the main absorbing portion. It is good also as a state which is not done. Further, the impact energy absorbing member 10 of this embodiment, are fixed separately at a main absorbent portion 11 in the sub absorbing portions 12 and 13 and from each other welding or the like to each other, by processing a member which is integral in advance A collision energy absorber may be formed.

Claims (8)

A collision energy absorber that is provided at the front part of a vehicle body of a railway vehicle and absorbs collision energy by crushing with a load from the front,
A main absorbent portion extending in the front-rear direction;
An upper sub-absorption part provided on the upper side of the main absorption part;
A lower sub-absorption part provided below the main absorption part ,
The upper sub-absorption part is provided integrally with the main absorption part via an upper fracture planned part extending in the front-rear direction ,
The lower sub-absorption portion is a collision energy absorber for a railway vehicle that is provided integrally with the main absorption portion via a lower-side rupture planned portion that extends in the front-rear direction . The upper and lower rupture portions are spaced apart from each other in the front-rear direction by connecting portions that partially connect the upper sub-absorption portion and the lower sub-absorption portion to the main absorption portion . The collision energy absorber for a railway vehicle according to claim 1, wherein the collision energy absorber is formed by arranging a plurality of rails. The main absorbent portion has a cylindrical portion extending in the front-rear direction,
The upper-side sub absorbing portion is connected to the tubular portion so as to form a space between the upper wall portion of the tubular portion,
The collision energy absorption of the railway vehicle according to claim 1, wherein the lower sub- absorption portion is connected to the tubular portion so as to form a space with the lower wall portion of the tubular portion. body. The upper-side sub absorbing portion has an inverted concave shape in cross section when viewed from the front,
The lower secondary absorbent portion has a concave cross section when viewed from the front,
The upper and lower rupture portions are front and rear ends of the upper and lower sub-absorbers and the lower sub-absorber that face the main absorbent portion , respectively, with respect to the main absorbent portion . The collision energy absorber for a railway vehicle according to claim 3, wherein the collision energy absorber is formed by fixing a plurality of locations at intervals in a direction. The collision energy absorption of the railway vehicle according to any one of claims 1 to 4, wherein front end portions of the upper sub-absorption portion and the lower sub-absorption portion are provided in a disconnected state with respect to the main absorption portion. body. 6. The railway according to claim 1, wherein front-rear direction positions of front end portions of the upper sub-absorption portion and the lower sub-absorption portion are substantially the same as front-rear direction positions of a front end portion of the main absorption portion. Vehicle collision energy absorber. The collision energy absorption of a railway vehicle according to any one of claims 1 to 6, wherein the height in the vertical direction of the upper sub-absorption part and the lower sub-absorption part is smaller than the vertical height of the main absorption part. body. The upper wall portion and the lower wall portion of the collision energy absorber are formed substantially horizontally, and the upper fracture portion and the lower fracture portion are substantially horizontal. A collision energy absorber for a railway vehicle according to claim 1.